a. Award [1 mark] for each of four statements clearly relating to the photo, such as:
b. Explanations are likely to refer to two of the following – salinization, eutrophication, the impacts of agro-chemicals, effluent run-off. In each case, award [1 mark] for the identification and up to [2 marks] for the explanation/developed exemplification.
The most likely focus for candidates will be:
Eutrophication [1 mark] occurs when fertilizers/nitrates are washed into a lake/river [1 mark]. Algae grow, and then die, leading to oxygen depletion [1 mark].
- airport under water (air traffic)
- Bruce Highway flooded (road vehicles)
- river transport disrupted (river traffic)
- isolation of Rockhampton from places to the west
- possible closure of bridges
- difficulty in crossing the flood plain (by any means of transport)
- some city streets likely to be impassable
- credit other valid suggestions eg “car parks flooded”.
b. Explanations are likely to refer to two of the following – salinization, eutrophication, the impacts of agro-chemicals, effluent run-off. In each case, award [1 mark] for the identification and up to [2 marks] for the explanation/developed exemplification.
The most likely focus for candidates will be:
Eutrophication [1 mark] occurs when fertilizers/nitrates are washed into a lake/river [1 mark]. Algae grow, and then die, leading to oxygen depletion [1 mark].